Miller Electric IH - Manual (Page 60)

OM-203 185 Page 56
Check for 115 volts ac at plug on rear of recorder and reseat plug.
If 115 volts ac is not present, check wiring between plug PLG4, receptacle RC4, and power switch.
If 115 volts ac is present at plug on rear of recorder, check that green LED is illuminated by viewing through louvers
on side of recorder.
A green LED should be visible through the louvers on the side of the recorder.
If green LED is not illuminated, replace recorder.
If drive does illuminate, replace the recorder.
D. Flow/Limit Light Does Not Illuminate When Cooler Is Turned Off
Check that cooler is plugged into switched receptacle and switch is in the Off position.
Unplug cooler power cord from receptacle.
Disconnect power output/extension cable from power source.
Press green Run button, and check if Fault/Limit light illuminates.
If light did not illuminate, check if power source displays Under Frequency Fault.
If power source does not display fault, consult power source Owner’s Manual for troubleshooting.
If power source does display fault, check parameter display for error message.
If error message appears on parameter display, proceed as follows:
Remove Fault/Limit amber lense and bulb.
Check for 115 volts ac at light socket.
If 115 volts ac is present, replace Fault/Limit bulb.
If 115 volts ac is not present, proceed as follows:
Remove IH/TS wrapper.
Check for 115 volts ac between pin 13 at receptacle RC3 and neutral (switch S1-1, lead 2).
If 115 volts ac is present, check wiring for Fault/Limit light PL-2.
If 115 volts ac is not present, check for 115 volts ac between pin 14 at receptacle RC3 and neutral (switch
S1-1, lead 2).
If 115 volts ac is present, replace circuit board PC1.
If 115 volts ac is not present, check wiring from pin 14 at receptacle RC3.
If no error message appears on the parameter display, proceed as follows:
Unplug IH/TS 115 volts ac power cord.
Remove IH/TS wrapper.
Check for an open circuit at RC3 between pins 17 and 18.
If circuit is open, replace circuit board PC1.
If circuit is not open, consult power source Owner’s Manual for troubleshooting.
Reconnect IH/TS 115 volts ac power cord.
If light illuminates, disconnect Coolant In (red) fitting from IH/TS.
Spray silicone lubricant into fitting.
Insert a long narrow screwdriver into fitting and actuate flow switch plunger several times.
Remove IH/TS wrapper.
Disconnect flow switch leads.